The FCC has announced that the official inflation factor for the third quarter of 2004 is 1.43 percent. The previous inflation factors for the Form 1240 are as follows:
| Quarter | Percent |
| 3rd Quarter 1995 | 2.22% |
| 4th Quarter 1995 | 2.22% |
| 1st Quarter 1996 | 2.39% |
| 2nd Quarter 1996 | 2.22% |
| 3rd Quarter 1996 | 2.21% |
| 4th Quarter 1996 | 1.83% |
| 1st Quarter 1997 | 2.70% |
| 2nd Quarter 1997 | 1.77% |
| 3rd Quarter 1997 | 1.43% |
| 4th Quarter 1997 | 1.43% |
| 1st Quarter 1998 | 1.14% |
| 2nd Quarter 1998 | 0.82% |
| 3rd Quarter 1998 | 1.00% |
| 4th Quarter 1998 | 0.78% |
| 1st Quarter 1999 | 1.60% |
| 2nd Quarter 1999 | 1.35% |
| 3rd Quarter 1999 | 1.04% |
| 4th Quarter 1999 | 1.96% |
| 1st Quarter 2000 | 3.00% |
| 2nd Quarter 2000 | 2.40% |
| 3rd Quarter 2000 | 1.62% |
| 4th Quarter 2000 | 1.99% |
| 1st Quarter 2001 | 3.23% |
| 2nd Quarter 2001 | 2.08% |
| 3rd Quarter 2001 | 2.25% |
| 4th Quarter 2001 | (0.11%) |
| 1st Quarter 2002 | 1.21% |
| 2nd Quarter 2002 | 1.24% |
| 3rd Quarter 2002 | 1.02% |
| 4th Quarter 2002 | 1.78% |
| 1st Quarter 2003 | 2.39% |
| 2nd Quarter 2003 | 1.00% |
| 3rd Quarter 2003 | 1.66% |
| 4th Quarter 2003 | 1.50% |
| 1st Quarter 2004 | 2.84% |
| 2nd Quarter 2004 | 3.23% |
| 3rd Quarter 2004 | 1.43% |